Friction lining



Jan. 12 1926. 1,569,579

T. M. RUSSELL FRICTION LINING Filed Jan. 2. 1924 Patented Jan. 12, 1926.

- UNITED STATES e A 1,569,579 PATENT OFFICE.

THOMAS M. RUSSELL, OF MIDDLETOWN, CONNECTICUT, ASSIGNOR 1:0 THE RUSSE MFG. OO., O! MIDDLETOWN, CONNECTICUQ'A CORPORATION.

FRICTION LININ G.

Application filed January 2, 1924. Serial No. 683,850.

To all whom it may concern:

Be it known that I THOMAS M. RUSSELL, a citizen of they United States, residing at Mid dletown, in the county of Middlesex and State of Connecticut, have invented a new and useful Improvement in Friction Linings; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in,

Fig. 1 a perspective view of a broken section of friction lining embodying my invention.

' Fig. 2 a diagrammatic view in longitudinal section thereof, showing one form of weave which may be employed in carrying out my invention. I

My invention relates to an improved friction lining designed with particular reference to use on the transmissionand brakebands of automobiles and in kindred situations where friction bands operate in a bath or spray of lubricant, the object being to provide afriction band of superior strength and durability, with particular reference to su erior efliciency in the retention and di usion of the oil, whereby the undue wear and the charring of the face of the lining is prevented.

With these ends in view, my invention consists in a friction lining characterized by having a back of oil-distributing and cushioning threads and a facing of friction threads, these two classes of threads being interwoven so that they are brought into intimate relation between the two faces of the fabric.

My invention further consists in a friction lining having certain details of construction as will be hereinafter described and pointed out in the claim.

I would have it understood that I do not limit myself to threads of any particular variety of weaves might be utilized in producing my improved roduct.

For the purpose 0 illustration, I have shown a lining consisting of a three-ply cotton facing and a wool-back, the three cotton plies respectively consistin warp-threads 5 and weft-t reads 6, warpof interwoven threads 7 and weft-threads 8, and warp-- threads 9 and weft-threads 10, these lies' being bound together by a binder-threa 11,

which reaches from front to back of the three plies. The wool-back is made up of wool-warps 12, which are carried-from back to front, so as to be'looped over the weftthreads 8 of the intermediate cotton ply. As thus woven, the wool threads 12, forming the oil-distributingand resilient back of the lining, are carried forward into the very body of the friction-producing .cotton threads, into which they'carry and diffuse the oil, so as to insure the abundant supply thereof thereto,. .thu s guarding the facingfrom undue wear and charring. Furthermore, with the wool and cotton threads so interwoven and incorporated, the resulting fabric is not only stronger and more durable, but also moreeflicient. than the-similar friction fabrics of the prior art, in which the wool and cotton surfaces have been made separately and adhered by some sort of ad on the one hand, of the adhesive to deteriorate and allow the wool and cotton layers to separate, and, on the other hand, on account of the inevitable wearing through of the stitching and the consequent destruction of the bond between the two layers. Moreover. when the woolen 2 and cotton threads are interwoven and incorporated, as described, the combined influence of the lubricant, pressure and heat, tending to harden the wool, is reduced to the minimum, whereby the cushioning efiect of the back of the liningis maintained at a high pitch of efliciency'and chattering in large measure avoided. I am aware that wool fabrics have been provided with cotton backs, reducing the cost and retaining the appearance of wool. Such fabrics have been treated to render them waterproof, and have been used extensively in the production of waterproof garments for personal wear.

I claim:

A thick, narrow ribbon having selvage edges for use in oil-immersed brakes and transmissions, the said ribbon consisting of a facing of cotton threads and a backing of woolen threads, such woolen and cotton due wear and charring, the matting and threads being interwoven between the two hardening of the friction cotton threads faces of the fabric, whereby the woolen being also reduced. 1 threads with their relatively-greater, lubri- In testimony whereof, I have signed this 5 cant-diffusing ability, carry the lubricant specification.

forward into the cotton threads, which are thus kept lubricated and prevented from un- I THOMAS M. RUSSELL. 

